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(A) lateral lumbar X-rays of the previous L4-S1 fusion with advanced degenerative changes and decreased disc heights at L2-3 and L3-4. Axial T2-weighted MRI sections of (B) L2-3 and (C) L3-4 levels and (D) a sagittal slice demonstrating the bilateral recess and central canal stenosis. (E,F) are postoperative AP and lateral views showing the extension of the fusion to L2 and augmented disc heights.
